2978684143 has 2 divisors, whose sum is σ = 2978684144. Its totient is φ = 2978684142.

The previous prime is 2978684141. The next prime is 2978684147. The reversal of 2978684143 is 3414868792.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2978684143 - 2¹ = 2978684141 is a prime.

Together with 2978684141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2978684141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489342071 + 1489342072.

It is an arithmetic number, because the mean of its divisors is an integer number (1489342072).

Almost surely, 2^2978684143 is an apocalyptic number.

2978684143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2978684143 is an equidigital number, since it uses as much as digits as its factorization.

2978684143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 52.

The square root of 2978684143 is about 54577.3226074713. The cubic root of 2978684143 is about 1438.8255829212.

The spelling of 2978684143 in words is "two billion, nine hundred seventy-eight million, six hundred eighty-four thousand, one hundred forty-three".